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authorGeert Uytterhoeven <geert+renesas@glider.be>2015-04-15 19:17:17 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2015-04-15 19:35:23 -0400
commite8a7ba5f5c8c0c94c0c7f1bcd53c0289560c7446 (patch)
treed7c31f8969586dfad3a9092910c05dbbe0edc33f /Documentation
parent7330660ed2e8d8d4c65b90cea62d8f1ed49c0104 (diff)
lib/vsprintf: Move integer format types to the top
Move the format types for 64-bit integers and configurable size integers to the top, so they're next to the other integer format types. While at it, add the missing format types for s32 and u32. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Mike Turquette <mturquette@linaro.org> Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/printk-formats.txt32
1 files changed, 15 insertions, 17 deletions
diff --git a/Documentation/printk-formats.txt b/Documentation/printk-formats.txt
index 71438f3eb0c0..56804e40cb18 100644
--- a/Documentation/printk-formats.txt
+++ b/Documentation/printk-formats.txt
@@ -8,6 +8,21 @@ If variable is of Type, use printk format specifier:
8 unsigned long long %llu or %llx 8 unsigned long long %llu or %llx
9 size_t %zu or %zx 9 size_t %zu or %zx
10 ssize_t %zd or %zx 10 ssize_t %zd or %zx
11 s32 %d or %x
12 u32 %u or %x
13 s64 %lld or %llx
14 u64 %llu or %llx
15
16If <type> is dependent on a config option for its size (e.g., sector_t,
17blkcnt_t) or is architecture-dependent for its size (e.g., tcflag_t), use a
18format specifier of its largest possible type and explicitly cast to it.
19Example:
20
21 printk("test: sector number/total blocks: %llu/%llu\n",
22 (unsigned long long)sector, (unsigned long long)blockcount);
23
24Reminder: sizeof() result is of type size_t.
25
11 26
12Raw pointer value SHOULD be printed with %p. The kernel supports 27Raw pointer value SHOULD be printed with %p. The kernel supports
13the following extended format specifiers for pointer types: 28the following extended format specifiers for pointer types:
@@ -246,23 +261,6 @@ struct va_format:
246 261
247 Passed by reference. 262 Passed by reference.
248 263
249u64 SHOULD be printed with %llu/%llx:
250
251 printk("%llu", u64_var);
252
253s64 SHOULD be printed with %lld/%llx:
254
255 printk("%lld", s64_var);
256
257If <type> is dependent on a config option for its size (e.g., sector_t,
258blkcnt_t) or is architecture-dependent for its size (e.g., tcflag_t), use a
259format specifier of its largest possible type and explicitly cast to it.
260Example:
261
262 printk("test: sector number/total blocks: %llu/%llu\n",
263 (unsigned long long)sector, (unsigned long long)blockcount);
264
265Reminder: sizeof() result is of type size_t.
266 264
267Thank you for your cooperation and attention. 265Thank you for your cooperation and attention.
268 266